№1 а) (-3/2)^3+(5/4)^2=(-27/8)+(25/16)=(-27*2+25)/16=-29/16
б) (-2)^6*(1/72)+(-6/11)^0=(-64/72)+1=(-8/9)+1=(1/9)
№2 a) a^3n+1: б) x^3n-1
№3
1-(1/27)*(-3)^3=1-(-27/27)=1+1=2
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Answers & Comments
1- 1/27*(-3)^3 = 1/27* (-27)= -27/27=-1
№1 а) (-3/2)^3+(5/4)^2=(-27/8)+(25/16)=(-27*2+25)/16=-29/16
б) (-2)^6*(1/72)+(-6/11)^0=(-64/72)+1=(-8/9)+1=(1/9)
№2 a) a^3n+1: б) x^3n-1
№3
1-(1/27)*(-3)^3=1-(-27/27)=1+1=2